Brake control



M. w. MCCONKEY BRAKE coumon June 14, 1927, 1,632,140

Original Filed March 24, 1923 I A I I Patented June 14, 1927.

UNITED STATES PATENT OFFICE",-

MONTGOMERY W. MQCONKEY, OI CHICAGO, ILLINOIS, ASSIGNOR T0 BEN'DIX BRAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BRAKE CONTROL.

Original application flied larch 24, 1923, Serial No. 627,489. Divided and this application filed June 13, 1925. Serial No. 36,846.

This invention relates to brakes, and is illustrated as embodied in an automobile chassis having brakes on all four wheels. An object of the invention is to simplify the control connections of a brake for a swivelled wheel, such as the front brake of an automobile, by arranging the swivelling and non-swivelling parts of the connections so that their point of engagement movesin applying the brake from an idle posit on spaced from the swivelling axis to an active position substantially in that axis, instead of requiring the use of a jointat all times in the swivelling axis. In one desirable arrangement, a lever is arranged to'apply the brake, its end being connected to the parts swivelling with the wheel and being movable as described toward the axis to anactive position substantially in the axis.

Another important feature of the invention relates to the use, in brake operating connections, of a universal joint or its equivalent with the double function of permitting the swivelling of the wheel and of permitting a slight lateral or circumferential shifting of the brake or of an applying device for the brake. Preferably the oint or the like is arranged, at least when the brake is applied, at the intersection of the swivelling axis of the wheel with an axis about which the brake or the brake-applying device may s lift.

The above and other objects and features of the invention, including various novel combinations of parts and desirable particular constructions, will be apparent from the following description of one illustrative embodiment shown in the accompanying drawings, in which:

Figure 1 is a diagrammatic longitudinal vertical section through the chassis, showin the hookup;

I i ure 2 is a vertical section looking outwardly at one front brake; and

Figure 3 is a vertical section, on the line 33 of Figure 2, through the brake.

In the arrangement illustrated, the invention is embodied in an automobile chassis including a frame 10 supported on rear wheels 12 having brakes 14, and front wheels 16 having brakes 18. The brakes are applied by de ression of a pedal 20 operating links or ca les 22 extendingto the front brakes 18. The backing plate 24 of each without front brake has a limited angular movement vwith the drum 26, when the brake is applied,

to operate cables 28 and connections 30 to apply the rear brakes 14. The above-described general arrangement forms the subect-Inatter of my co-pending application No. 627,439, filed March 24, 1923, of which "the present application is a division.

as a link 44. The oppositeend of the link is universally jointed, or otherwise engaged, by one end of a.lever 46, fulcrumed on a shaft 48 carried by the axle 34, and operated by an arm 50 connected to the link or cable 22. It is to be especially noted that the point of engagement of lever 46 and link 44, or their equivalents, is not at all times in the swivelling axis, as in prior constructions, but is movable at right angles to the swivelling axis from an idle position spaced from the swivelling axis parallel to the wheel 16 to an active position substantially in the swivellingaxis.

Also it is to be noted that the joint at the end of the lever is arranged, when the brake is applied, at the intersection of the swivelling axis of the wheel with the axis about which toggle 42, or other applying device, shifts when the brake turns. Thusthe joint has the double function of permitting the swivelling of the wheel and the shifting of tire brake.

While one illustrative embodiment of the V invention has been described in detail, it is the applying device, and in fact of the enlid powenniultiplying brake-operating device swivelling' with the Wheel and a non-swivelling cooperating part hnvinga point of engagement inovable in applying the brake I substantially in e plane perpendicular to the .gagenient movable in applying the brake substantially at right englcs to the swivelling axis to en active position substantially in that axis.

3. A vehicle having, in combination, a

swii elled Wheelhaving a brake, and brakeope sting connections including a joint pen initting swivelling of the wheel and movable substantially at right angles to the swivelling exis to an active position substantially in that axis,

4:. A vehicle having, in combination, a swivelled wheel having, an expansible and contrectcble brake, and brekebperating'connections including a universally -iuovnblc joint movable perpendicularly to the swivelling exis from an idle position spaced from the swivelling axis toe-n active position substentielly in that axis.

5. A vehicle having, in combination, a

swivelled Wheel having an expansible and contrectable brake having adjacent free ends, and brake-operating connections. including operating means engaging both free ends and e member controlling the operating; means having it part engaging said means which is movable substantially perpendicu la r to the s wivelling 0 froln anidle posi* 'tion spaced from the s r .lling axis to an native position-substantially in that axis,

A vehicle having, in combination, a ewivelled Wheel having an expansible brake,

toggle for expanding the brake, and toggleoperating means including e joint movable in expanding the brake from an idle posi- "ion up l. from the swivelling' axis to an i ve pension substantially inthat axis.

'5; vehicle having, in; combination, a

nwivelled uncel hevinp a brake, it broke pert device svvlve ling with the ville-e a nonsi Welling operating member having movable in applying the brake irom pee.

and a link perpendicular to the i'ziis and connecting said part and H t on spaced from the swivellingu to active pos1t1on substantially 1D;

drum, and an operating lever having a part engaging said device and movable from an idle position spaced from the swivelling axis to an active position substantially in that ilXlS.

10. A vehicle heving, in combination, an axle, a- Wheel swivelled to the axle and hav ing a drum, an expansible friction device within the drum. having adjacent free ends, a device for forcing said free ends outwerdly against the drum, and an operating lever fulcrumed on. the axle having its end an gaging said device and movable from an idle position spaced from the swivelling axis to an active position substantially in that axis.

11. A vehicle having, in. combination, a swivelled Wheel having a drum, an expansible friction device Within the drum having adjacent free ends, e device forforcing said free ends outwardly against the drimi, and an operating lever having a part engaging said device and movable substantially pen pcndicular to the swivelling axis toward that axis from an idle position spaceda considerable distance from thatiexis.

12. A vehicle heving, incombination, a swivelled Wheel having e-drunn an expnn Bible friction deiticewvithin the-drum, expending means for said device Within the drum arranged outside of-the swivelling axis, a part for'operating said expending means, and e lever for applying the brake swivelled Wheel having a drum, a friction device engegeable with the dr'iun, means for forc ng the friction device against the drum arranged outside of the SWlVQlllll axis, a

part for operating said means, and a lever for applying the bra-lie having a portion opecetively engaging said pert, said portion of the lever moving in applying the brake substantially perpendicular to the swivelling axis toward that axis.

i i. A vehicle having, in combination, a swivelled Wheel, a brake for the wheel having an applying device shiftable slightly circumferentiallv, and operating connec tions for said device including a universal joint arranged at least when the brake is applied in the swivelling axis and having the double function of permitting the swivelling of the Wheel and of permitting the shifting of the applying device.

15. .A vehicle having, ,in combination, a. swivelled whee1, a brake forthe Wheel having an applying device shiftable slightly about an axis intersecting the swivelling axis at right angles, and operating connections for said device includin a universal joint arranged at least when the brake is applied alt-the intersection of the two axes and having'the double function of permitting the swivelling of the wheel and of permitting the shifting of the, applying device.

16. A vehicle having, in combination, a

swivelled wheel, arbrake swivelling with the wheel andhaving an applying device shiftable slightly aboutan axis intersecting the swivellingaxis substantially at right angles, and operating connections for said device including a part swivelling with the wheel and a non-swivelling leverhaving a portion engaging said part, said portion of the lever bein movable in 'applying'the brake from an idle position spaced from the swivelling axis to an active position substantially at the intersection of the two axes.

1'7. A vehicle having, in combination, a swivelled wheel, a brake swivelling with the wheel and having an applying device shiftable slightly about anaxis intersecting the swivelling axis substantially at right angles, and operating connections for said device including a part swivelling with the wheel and a non-swivelling lever having a portion engagingsaid part, said portion of the lever being movable in applying the brake from an idle position. spaced from both of said axes to an active, position substantially at their intersection. a

18. A vehicle having a swivelled wheel with a drum, and, in combination therewith, a brake engageable with the drum and shiftable about the axisof rotation of the Wheel,

and applying means for the brake including parts universally movable relatively to each other when the brake is appiled about the intersection of the swivelling axis with the axis of rotation of the Wheel, to permit both theswivelling of the the brake.

wheel and the shifting of 19. A vehicle having a swivelled Wheel with a drum, and, in combination therewith,

a brake engageable with the drum and shiftthe intersection of the swivelling axis with the axis of rotationof the wheel, to permit both the swivellin of the wheel and the shifting of the bra e, the point of engagement of said parts being spaced materially from said axes when the brake is'not applied. v

20. A vehicle having a swivelled wheel with a drum, and, in combination therewith, a brake engageable with the drum and shiftable about the axis of rotation of the wheel, and applying means for the brake including a universal joint arranged when the brake is applied substantially at the intersection of the swivellin axis ,with the axis of rotation of the whee 21. A vehicle having a swivelled wheel with a drum, and, in combination therewith,

a brake engageable with the drum andshiftable about the axis of rotation of the wheel, and applying means for the brake including a universal joint arranged when the brake is applied substantially at the intersection of the swivelling axis with the axis of rotation of the wheel, and moved to that position in applying the brake in a direction substantially at right angles to both of said axes.

In testimony whereof I have hereunto signed my name.

' MONTGOMERY w. MoCONKEY. 

